package cn.edu.xjtu.tencent.Practice;

import java.util.Scanner;

/**
 * @author Hydrion-QLz
 * @date 2022-09-10 19:16
 * @description
 */
public class plus6 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            String[] arrs = sc.nextLine().split(" ");
            int sum = 0;
            for (String s : arrs) {
                sum += Integer.parseInt(s);
            }
            System.out.println(sum);
        }
    }
}
